Home / 279,928.08-386,310.96-159,089.76

Finding the Fourth Proportional to 279,928.08, 386,310.96 and 159,089.76

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Solution

The fourth proportional to 279,928.08, 386,310.96 and 159,089.76 is: 219,549.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,928.08 : 386,310.96 = 159,089.76 : x
  2. Step 2: Convert to fraction form
    279,928.08/386,310.96 = 159,089.76/x
  3. Step 3: Cross multiply
    279,928.08x = 386,310.96 × 159,089.76
  4. Step 4: Simplify right side
    279,928.08x = 61,458,117,911.77
  5. Step 5: Solve for x
    x = 61,458,117,911.77/279,928.08
  6. Step 6: Final answer
    x = 219,549.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.